I once read a fantasy book (forget the name) and it had a character called Keredwel. I've been going online as Keredwel for over a year now, and I don't think there's anyone else on the web by that name. In the book Keredwel was dumb, blonde and vain, but I fell in love with the name and it's stuck since!

I also love LotR, and Keredwel sounds Elvish so I took it.

Only problem is that most people always misspell it!